14 [April 



mit and diverging from outer side of eye in its npper half, the face below an- 

 tenna?, edge of anterior angle, V spot on thorax, a large slender angular line on 

 ]>leura, a sjiot above posterior coxaj and the breast, white : coxre blaek above : 

 the four anterior legs white, black above: posterior legs black, their trochan- 

 ters white and femora in the mirldle whitish : abdomen rufous, the two basai 

 segments and sides of third black, at base beneath paler; wings hyaline, ner- 

 vures blackish. 



Massachusetts. (Coll. Ent. Soc. Philad.) One specimen. 



This resembles T. /lissimiiis, especially in the length and form oi 



antennae, bitt there is no angular line on the pleura of that. 



2S. Tenthredo formosus, n. sp. 



Black, with inner orbital lines, face below antenme, cheeks, collar, spots on 

 sides of scutel and on pleura, venter and legs in part, white; apex of tergnm 

 and posterior femora, rufous. (Long Co,*?. Br. wings 0.98 in.) 



9. Shining black; antennsB moderate, joints enlarged at tip; 3rd joi)it one- 

 half longer than 4th; head large and wide, polished, furrows aljout ocelli dis- 

 tinct; lower ocellus in an oval sinus, open above and below, nasus deeply 

 notched, clypeus round ; a stripe from near the summit of head half down the 

 inner orbit on each side ; the face below autenuse, cheeks, tegula;, collar, a spot 

 on each side of scutel, with an outer-side spot, three dots beneath on each side 

 of postscutel, edge of basal plates, a large spot on jjleura with one before and 

 two behind it and the venter, except at tip, white ; the five apical segments of 

 tergum, and apex of venter rufous ; the coxee, trochanters, most of anterior 

 legs, of middle femora and basal third of posterior femora, white; intermedi- 

 ate tiljite and tarsi and most of posterior femora and tibiae rufous ; a slender 

 blaek line down the two anterior pair of legs, the base of posterior femora 

 above, the apex of tibise and their tarsi black; apical half of wings somewhat 

 clouded, nervures blackish, stigma at tip black, its base and the eosta }>ale 

 rutbus. 



"^ . The male has most of the tergum rnfotis. and the breast and coxee of a 

 waxen color. 



Massachusetts. (Coll. Eut. Soc. Philad.) Maine. 



I have received this fine insect from Mr. Scudder (Mass.). and from 

 Mr. Packard (Maine.) 



29. Tenthredo semi-rubra. n. sp. 

 Black: the apical half of abdomen rufous. (Long (Koi. Br. wings 0.98.) 

 9. Sliiniug black: antennae moderate, slender, enlarged at tips of joints. 

 slightly tlattened beyond the middle, 3rd joint longer than 4th ; head thick- 

 ened, wider than thorax, polished, with deep depressions at sides of ocelli : a 

 square, punctured, enclosed space back of ocelli, a deep sinus below lower 

 ocellus extending between antennaj; nasus emarginate, labrtxm rounded before: 

 both, with the mandibles and palpi, white ; the two basal segments of abdomen 

 black, remainder rufous; abdomen lengthened and not very stout; legs black. 



